This document discusses several important herbal plants found in Sri Lanka, including moringa, ginger, coriander, and bael flowers. It notes that herbal plants should be protected because they are less expensive, have fewer side effects, can be used flexibly, and are good for multiple conditions. The threats to herbal plants are habitat destruction through deforestation, overexploitation, lack of regulation, and unawareness. Some ways to protect herbal plants mentioned are cultivating them in gardens, using ayurvedic rather than western medicines, preserving them through drying or capsules, storing seeds, and genetically modifying plants. The document also lists some conserved areas in Sri Lanka that protect medicinal plants.